Emergency lighting system.



J. W. JEPSON.

EMERGENCY LIGHTING SYSTEM.

APPLICATION FILED IULY 8,1914.

1 ,269,7 1 2. Patented June 18, 1918.

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QXR-twwwo: EJnuewtoz E E W v/ I a i WM UNITED STATES PATENT OFFICE.

JOHN W. JEPSQN, OF DEPEW, NEW YORK, ASSIGNOR '10 GOULD COUPLER COMPANY, A CORPORATION OF NEW YORK.

EMERGENCY LIGHTING SYSTEM.

Specification of Letters latent.

Patented J unc 1S, 1918.

To whom it may concern:

Be it known that 1, JOHN WV. JnrsoN, a citizen or the United States, and a resident of Depew, Erie county, New York, have in vented certain new and useful Improvements in Emergency Lighting Systems, of which the following is a specification.

My invention relates to improvements in emergency lighting systems, more especially for electric motive power cars, where the regular lights are supplied with energy from the motive power mains.

One object of my invention is to provide a simple and efficient system in which a storage battery may be charged with energy from the motive power mains and used to supply an auxiliary light circuit upon failure of the motive power mains to supply energy for any reason. Further objects, features and advantages will more clearly appear from the detail description given below, taken in connection with the accompanying drawing, which forms a part of this specification and illustrates diagrammatically a system embodying my invention in one form.

Referring to the drawing, 1 represents one of the-motive power mains adapted to supply an electrically propelled car or train as through a trolley 2. 3 represents the light wire for the car or train adapted to be connected to the trolley and main 1 by means of a double throw switch 4. In its other position the switch 4 is adapted to connect the light wire 3 with ground. The ground acts as the return main for the power current and accordingly wherever I use the words motive power mains it will be understood that one of them may be ground. The regular lights are shown at 5 connected across the motive power mains, that is, across the main 1 and ground at 6, in series with a coil 7, switch 8 and storage battery 9. The coil 7 is adapted to operate electromagnetically on the switch 8 to close the latter when the coil is energized.

10 represents auxiliary lights connected across an auxiliary light circuit 11, the latter being adapted to be connected across the battery 9 by means of a switch 12 electromagnctically controlled by a high resistance or fine wire coil 13. The coil 13 is connected in series with the low resistance coil 7 but in simulate the switch 8, so that the switch 8 short circuits the coil 13 when the switch 8 is closed.

In operation, when the switch 4 is closed to the trolley line or main 1, if the mains are energized, current will flow through the regular lights 5, coil 7, coil 13, and through Q coil 7 so that the switch 8 is maintained closed. This current acts to charge the bat tery and the auxiliary light circuit is disconnected from the battery by the opening of the switc 12.

On failure of the energy supply from the trolley line or motive power mains, the switch l is thrown to ground which will allow current to flow from the battery through the coil 13, coil 7, regular lights 5, switch 4 and ground to the opposite side of the battery. This current, however, by rea son of the relatively low voltage of the battery and few turns of the coil 7 is insuilicient to cause the closing of the switch 8, but by reason of the relatively large number of turns of the coil 13, is sufficient to cause the switch 12 to close so as to connect the auxiliary light circuit 11 directly in circuit with the battery so that the auxiliary lights 10 will be energized from the as desired. W hen the switch 4 is thrown to its neutral position, so as to be disconnected from both the trolley 2 and ground, both coils 7 and 13 will be dei nergized, thereby causing both the circuit through the regular lights 5 and the auxiliary light circuit to be opened so that neither set of lights will be lighted.

What I claim as new and desire to secure by Letters Patent of the United States is j 1. An emergency lighting system for electric motive power cars or the like, having in combination with the motive power mains a storage battery and regular lights connected in series across the motive power mains, a switch in the battery circuit, a coil in series with the battery for controlling the operation of said switch, a coil in shunt to said battery switch ami in series with the first mentioned coil, an auxiliary light ircuit, a switch operted by said second coii for connecting the auxiliary iigiit circuit, across the battery and a switch for disconnecting the connection between ishe T631, iisi lights and the motive power main and connecting them to the other sicie of the battery.

2 fm emergency lighting system for eiectrio motive power cars or the like, having in com List/ion with the iiiotive power mains storage bet'ei'y, ev switch for connecting the battery across tile iiiotive pews? mains to be charged therefrom, a coil series with the battery for conti" Hing the operation of said. switch, an auxiliary light circuit, a sWitci; for connecting the auxiliary iight ciio cui in circuit with the battery, e coil for op crating the latter switch, and means for connecting said last cuit with the butts U 3, AH 8111618Z1C lighting system for electric motive power cars or ti: iike, having 1i power ma'fis a storage battery, a switch for connecting the battery zici'o the motive ower mains to be char-god therefrom, coil in series with the battery for controiiing the operation of said switch, an auxiliary iigiit circuit, 2i switch for connecting the euxiiiery light cirejotioneci coii. in circuit in circuit vith the battery, e coii for opei'eti g the latter switch, and means for connec ing seioi lest mentioned coil in circuit with the battery, said two coiis being serieiiy connected with one another.

i. An emergency lighting system for eiectrio motive power cars or the iike, having in combination With the motive power mains 2: storage battery, e switch for connecting the battery across the incisive power mains to be ciietged therefrom, e coil in series with the battery for controlling the operation of said switch, auxiliary light circuit, 22 switch for coimect' ig the auxiiiary iigiit circuit in circuit with the battery, e coii 0? operating the latter switch, and means 0 connecting lest mentioned ccii in cir- Ctiii? with the battery, and connections Where by the closing first switch sets to shunt said. second men iotoeii cii.

An emergency lighting s stem for electric motive power cars or the like, having in combination with the motive power mains a storage battery, switch for connecting the battery across the motive power to charged therefrom, a coil in se ice with the battery for controiiiiig the operation of said switch, so eiixiiiery 1i circuit, e

battery across the mains to ice; 'ciiei'ged' thcrefroi coil in series with the betteiy for controiimg the opera .021 of semi switch,

a relatively high TGSiBLSllC-B' connecteci iii 7 shunt to said. switch, so auiiiiiziry light circuit, and automatic meeoswhereiiy the ZiilX iiiary light ci rcuit may be comiected in circuit with the better 7. 111 emergency iignting systemior eiectric motive power cars 01' the iike, having in combination with tile in time power mains s storage battery, regular ghts suppiieci item the motive power iii-sins, e, s v'li-Cil f0? connecting the batteey across the mains to be ciicigeii therefrom, e coil in series with the battery for controiiing the operation of said switch, :1 reizitii'eiy high resistance connected in shunt to said switch, on an. 'iiei'y light cii'cuiiz, and means wher by the auxiliety light circuit may be connected in ircuit with me battery, seiti icst mentioned automatic means embracing a double throw switch for connectii the regular iigiits either With one of the motive POVJQI mains or with ground.

8 A21 emergency lighting system for electric motive power cars or the like, having in combination with the motive power mains storage battery, '2 switch. for connecting the across the be charged therefrom, s coii' iiisesies theiiattergtfor coiiti'oiiizig the operation said switch and adopts; when. energized hoici the switch closed, a ireiativeiy high resisteoce connected in siiuii'zto said switch, and scented; to be substsiitiel T siiortcircciteci by said. switch "when the Litter is cioseci, euxi lery light circuit, and flies-21s whereby the auxiliary iigiit circuit may oe connect across the bat testimony Wile-reef, it have sigiied'mv seine this s1 eci" ce'tion, in the presence oi two subsciciiiing W It is hereby certified that in LOWOIIS Pateni N 0. 1,269,712, granted June 18, 1918,

upon the application of John W. Jep son, of Depew, New York, 10f an improvement i .Emergency Lighting Sys'bemz-if em rs appear in the printed specification requiring correction ae'foliowe: Pegefl, 1line 91, claim 7, strike out the Word ei'itome tid ;.aa.ine-p a ge ,line 107, claim 8,beforefihe word means inserfi the word dutomaik; mid thetjt hef said Leeter's Patent should be read with these corrections t hereinthatthe 581110. may conforin to the re'oord'of the case in the Patent Oflice.

si ma-an eared his 23d (11 of m, A. 11,1918.

in Letters Patent No. 1,2691712 4 (mm R. F. WHITEHEAD,

Acting Uommiaibner of Patents G1. 171 313 '(forrections in Lgttelfs-Pd tentNq. 1,269.1]112. i

upon the appli tfzgltion of John W; Jpbn, of Depew, New York, fof at; improvement- It is he reby certified that in Lam's Patient No.'1,269,712,

granted June 18, 1918,

in -Emergency sys'tenisf eri rsi appcar in the printed specification autdmaltic" requiring correction @utpmafic; and thgtjthe said Lefiter's Pd'mnt shouid be read with these correctiqns thereinthst-tuni-11 46 may conform to th record'df th case in the Patent Oflic.

- I si ned inq 38am fifis: 23d day m ,A.-n,;191'8.

R. F. WHITEHEAD,

Acting C'ommssi oner of Patents pg fpllowgs: Page'c2 dine; 91, claim strike out the word- 

